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On this page

  • First Map with mapgl

Using mapgl

Author

Arvind V

library(tidyverse)
library(tidycensus)
library(sf)
library(mapgl)

First Map with mapgl

mapgl::mapboxgl(
  style = mapbox_style("satellite"),
  projection = "winkelTripel"
)
mapgl::mapboxgl(
  style = mapbox_style("streets"),
  projection = "winkelTripel"
) %>%
  fly_to(
    center = c(77.580643, 12.972442),
    zoom = 18, pitch = 50, bearing = 140
  )
maplibre(
  style = maptiler_style("bright"),
  center = c(77.580643, 12.972442),
  zoom = 16,
  # pitch = 50, bearing = 140
) %>%
  add_fullscreen_control(position = "top-left") %>%
  add_navigation_control()
fl_age <- get_acs(
  geography = "tract",
  variables = "B01002_001",
  state = "FL",
  year = 2022,
  geometry = TRUE
)
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fl_age
range(fl_age$estimate, na.rm = T)
[1] 19.1 81.9
fl_map <- maplibre(style = maptiler_style("basic"), bounds = fl_age)

fl_map %>%
  add_fill_layer(
    id = "fl_tracts",
    source = fl_age,
    fill_color =
      interpolate(
        column = "estimate",
        values = c(20, 80),
        stops = c("lightblue", "darkblue"),
        na_color = "lightgrey"
      )
  ) %>%
  add_legend(
    "Median Age in Florida",
    values = c(20, 80),
    colors = c("lightblue", "darkblue")
  )
fl_map %>%
  add_fill_layer(
    id = "fl_tracts",
    source = fl_age,
    fill_color = step_expr(
      column = "estimate",
      values = c(20, 50, 80),
      base = "white",
      stops = c("lightblue", "blue", "darkblue"),
      na_color = "lightgrey"
    )
  ) %>%
  add_legend(
    "Median Age in Florida",
    values = c(20, 80),
    colors = c("lightblue", "blue", "darkblue")
  )
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